[[glossary]]
Glossary
--------

* *ALU*: Arithmetic/Logic Unit
* *APU*: Application Processing Unit
* *ASIC*: Application-Specific Integrated Circuit
* *AXI*: Advanced eXtensible Interface
* *BHT*: Branch History Table
* *BTB*: Branch Target Buffer
* *Byte*: 8-bit data item
* *CPU*: Central Processing Unit, processor
* *CSR*: Control and Status Register
* *Custom extension*: Non-Standard extension to the RISC-V base
instruction set (RISC-V Instruction Set Manual, Volume I: User-Level
ISA)
* *CVA6*: Core-V Application class processor with a 6 stage pipeline
* *D$*: Data Cache
* *DPI*: Direct Programming Interface
* *EX* or *EXE*: Instruction Execute
* *FPGA*: Field Programmable Gate Array
* *FPU*: Floating Point Unit
* *Halfword*: 16-bit data item
* *Halfword aligned address*: An address is halfword aligned if it is
divisible by 2
* *I$*: Instruction Cache
* *ID*: Instruction Decode
* *IF*: Instruction Fetch
* *ISA*: Instruction Set Architecture
* *KGE*: Kilo Gate Equivalents (NAND2)
* *LSU*: Load Store Unit
* *M-Mode*: Machine Mode (RISC-V Instruction Set Manual, Volume II:
Privileged Architecture)
* *MMU*: Memory Management Unit
* *NC*: Not Cacheable
* *OBI*: Open Bus Interface
* *OoO*: Out Of Order
* *PC*: Program Counter
* *PMP*: Physical memory protection (RISC-V Instruction Set Manual,
Volume II: Privileged Architecture)
* *PTW*: Page Table Walker
* *PULP platform*: Parallel Ultra Low Power Platform
(<https://pulp-platform.org>)
* *RAS*: Return Address Stack
* *RV32C*: RISC-V Compressed (C extension)
* *RV32F*: RISC-V Floating Point (F extension)
* *S-Mode*: Supervisor Mode (RISC-V Instruction Set Manual, Volume II:
Privileged Architecture)
* *SIMD*: Single Instruction/Multiple Data
* *Standard extension*: Standard extension to the RISC-V base
instruction set (RISC-V Instruction Set Manual, Volume I: User-Level
ISA)
* *TLB*: Translation Lookaside Buffer
* *U-Mode*: User Mode (RISC-V Instruction Set Manual, Volume II:
Privileged Architecture)
* *VLEN*: Virtual address length
* *WARL*: Write Any Values, Reads Legal Values
* *WB*: Write Back of instruction results
* *WLRL*: Write/Read Only Legal Values
* *Word*: 32-bit data item
* *Word aligned address*: An address is word aligned if it is divisible
by 4
* *WPRI*: Reserved Writes Preserve Values, Reads Ignore Values
* *XLEN*: RISC-V processor data length